/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:33:52,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:33:52,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:33:52,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-15 01:33:52,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-15 01:33:52,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-15 01:33:52,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-15 01:33:52,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-15 01:33:52,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-15 01:33:52,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-15 01:33:52,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-15 01:33:52,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-15 01:33:52,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-15 01:33:52,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-15 01:33:52,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-15 01:33:52,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-15 01:33:52,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-15 01:33:52,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-15 01:33:52,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-15 01:33:52,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-15 01:33:52,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-15 01:33:52,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-15 01:33:52,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-15 01:33:52,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-15 01:33:52,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-15 01:33:52,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-15 01:33:52,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-15 01:33:52,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-15 01:33:52,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-15 01:33:52,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-15 01:33:52,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-15 01:33:52,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-15 01:33:52,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-15 01:33:52,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:33:52,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:33:52,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:33:52,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-04-15 01:33:53,002 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:33:53,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:33:53,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:33:53,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:33:53,005 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:33:53,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:33:53,005 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:33:53,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:33:53,005 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:33:53,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:33:53,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:33:53,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:33:53,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:33:53,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:33:53,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:33:53,007 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:33:53,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:33:53,007 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:33:53,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:33:53,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:33:53,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:33:53,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:33:53,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:33:53,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:33:53,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:33:53,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:33:53,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:33:53,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:33:53,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:33:53,008 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:33:53,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:33:53,009 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:33:53,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:33:53,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:33:53,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:33:53,266 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:33:53,266 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:33:53,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c [2021-04-15 01:33:53,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8be8b3e8/d00aa4cc86b04fc4b1d8db85f96e4f66/FLAGaf8d6dee6 [2021-04-15 01:33:53,624 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:33:53,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/regression/forkJoinInLoop.c [2021-04-15 01:33:53,624 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-15 01:33:53,624 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2021-04-15 01:33:53,664 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8be8b3e8/d00aa4cc86b04fc4b1d8db85f96e4f66/FLAGaf8d6dee6 [2021-04-15 01:33:54,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8be8b3e8/d00aa4cc86b04fc4b1d8db85f96e4f66 [2021-04-15 01:33:54,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:33:54,053 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:33:54,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:33:54,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:33:54,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:33:54,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da02fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54, skipping insertion in model container [2021-04-15 01:33:54,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:33:54,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:33:54,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:33:54,162 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:33:54,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:33:54,176 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:33:54,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54 WrapperNode [2021-04-15 01:33:54,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:33:54,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:33:54,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:33:54,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:33:54,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:33:54,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:33:54,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:33:54,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:33:54,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... [2021-04-15 01:33:54,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:33:54,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:33:54,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:33:54,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:33:54,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:33:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 01:33:54,290 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-04-15 01:33:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-04-15 01:33:54,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:33:54,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:33:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-15 01:33:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 01:33:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:33:54,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 01:33:54,293 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:33:54,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:33:54,532 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-04-15 01:33:54,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:33:54 BoogieIcfgContainer [2021-04-15 01:33:54,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:33:54,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:33:54,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:33:54,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:33:54,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:33:54" (1/3) ... [2021-04-15 01:33:54,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274dd544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:33:54, skipping insertion in model container [2021-04-15 01:33:54,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:33:54" (2/3) ... [2021-04-15 01:33:54,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274dd544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:33:54, skipping insertion in model container [2021-04-15 01:33:54,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:33:54" (3/3) ... [2021-04-15 01:33:54,538 INFO L111 eAbstractionObserver]: Analyzing ICFG forkJoinInLoop.c [2021-04-15 01:33:54,548 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:33:54,548 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:33:54,551 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:33:54,552 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:33:54,576 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,576 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,576 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,576 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,576 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,576 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#in~i.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,576 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,577 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,577 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,577 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,579 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,579 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~y~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,579 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,580 WARN L313 ript$VariableManager]: TermVariabe |fooThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,580 WARN L313 ript$VariableManager]: TermVariabe fooThread1of1ForFork0_~i.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:33:54,586 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-04-15 01:33:54,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-04-15 01:33:54,612 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:33:54,612 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:33:54,612 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:33:54,612 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:33:54,612 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:33:54,612 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:33:54,612 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:33:54,612 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:33:54,620 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 46 transitions, 100 flow [2021-04-15 01:33:54,629 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 59 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:54,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-15 01:33:54,636 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:33:54,636 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:33:54,637 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:33:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:33:54,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1741648071, now seen corresponding path program 1 times [2021-04-15 01:33:54,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:33:54,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744092432] [2021-04-15 01:33:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:33:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:33:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:33:54,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744092432] [2021-04-15 01:33:54,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:33:54,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-04-15 01:33:54,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704863690] [2021-04-15 01:33:54,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-04-15 01:33:54,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:33:54,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-04-15 01:33:54,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-04-15 01:33:54,770 INFO L87 Difference]: Start difference. First operand has 59 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 58 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:54,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:33:54,780 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-04-15 01:33:54,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-04-15 01:33:54,781 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-04-15 01:33:54,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:33:54,786 INFO L225 Difference]: With dead ends: 51 [2021-04-15 01:33:54,786 INFO L226 Difference]: Without dead ends: 51 [2021-04-15 01:33:54,787 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-04-15 01:33:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-04-15 01:33:54,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-04-15 01:33:54,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:54,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2021-04-15 01:33:54,815 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 12 [2021-04-15 01:33:54,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:33:54,815 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2021-04-15 01:33:54,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2021-04-15 01:33:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-15 01:33:54,817 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:33:54,817 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:33:54,817 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:33:54,817 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:33:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:33:54,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1313432728, now seen corresponding path program 1 times [2021-04-15 01:33:54,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:33:54,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522902996] [2021-04-15 01:33:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:33:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:33:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:33:54,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522902996] [2021-04-15 01:33:54,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:33:54,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-15 01:33:54,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021727070] [2021-04-15 01:33:54,908 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-15 01:33:54,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:33:54,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-15 01:33:54,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-15 01:33:54,910 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:33:54,966 INFO L93 Difference]: Finished difference Result 55 states and 70 transitions. [2021-04-15 01:33:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-15 01:33:54,966 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-04-15 01:33:54,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:33:54,967 INFO L225 Difference]: With dead ends: 55 [2021-04-15 01:33:54,967 INFO L226 Difference]: Without dead ends: 55 [2021-04-15 01:33:54,968 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-15 01:33:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-04-15 01:33:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-04-15 01:33:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-04-15 01:33:54,978 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 14 [2021-04-15 01:33:54,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:33:54,979 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-04-15 01:33:54,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:54,979 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-04-15 01:33:54,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-04-15 01:33:54,980 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:33:54,980 INFO L551 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:33:54,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:33:54,980 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:33:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:33:54,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1967712229, now seen corresponding path program 1 times [2021-04-15 01:33:54,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:33:54,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653693827] [2021-04-15 01:33:54,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:33:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:33:55,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:33:55,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653693827] [2021-04-15 01:33:55,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487573630] [2021-04-15 01:33:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-15 01:33:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:33:55,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-04-15 01:33:55,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-15 01:33:55,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-04-15 01:33:55,227 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 01:33:55,231 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 01:33:55,232 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-04-15 01:33:55,232 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2021-04-15 01:33:55,250 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-04-15 01:33:55,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-04-15 01:33:55,257 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 01:33:55,259 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 01:33:55,259 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-04-15 01:33:55,259 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2021-04-15 01:33:55,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-04-15 01:33:55,343 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 01:33:55,347 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 01:33:55,351 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-04-15 01:33:55,352 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:19 [2021-04-15 01:33:55,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2021-04-15 01:33:55,690 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 01:33:55,695 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 01:33:55,698 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-04-15 01:33:55,698 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:19 [2021-04-15 01:33:55,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-04-15 01:33:55,748 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-04-15 01:33:55,751 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-04-15 01:33:55,752 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-04-15 01:33:55,752 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:26, output treesize:3 [2021-04-15 01:33:55,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:33:55,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-15 01:33:55,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-04-15 01:33:55,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296298326] [2021-04-15 01:33:55,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-04-15 01:33:55,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:33:55,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-04-15 01:33:55,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:33:55,757 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:55,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:33:55,985 INFO L93 Difference]: Finished difference Result 125 states and 170 transitions. [2021-04-15 01:33:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-04-15 01:33:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-04-15 01:33:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:33:55,987 INFO L225 Difference]: With dead ends: 125 [2021-04-15 01:33:55,987 INFO L226 Difference]: Without dead ends: 125 [2021-04-15 01:33:55,987 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 281.9ms TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2021-04-15 01:33:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-04-15 01:33:55,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 91. [2021-04-15 01:33:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.3444444444444446) internal successors, (121), 90 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 121 transitions. [2021-04-15 01:33:55,993 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 121 transitions. Word has length 37 [2021-04-15 01:33:55,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:33:55,993 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 121 transitions. [2021-04-15 01:33:55,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 15 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:33:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 121 transitions. [2021-04-15 01:33:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-04-15 01:33:55,994 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:33:55,995 INFO L551 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:33:56,209 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-04-15 01:33:56,209 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-04-15 01:33:56,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:33:56,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2013134328, now seen corresponding path program 2 times [2021-04-15 01:33:56,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:33:56,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471767716] [2021-04-15 01:33:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:33:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-15 01:33:56,234 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-15 01:33:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-15 01:33:56,248 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-15 01:33:56,264 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-15 01:33:56,264 INFO L652 BasicCegarLoop]: Counterexample might be feasible [2021-04-15 01:33:56,264 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 01:33:56,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:33:56 BasicIcfg [2021-04-15 01:33:56,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:33:56,295 INFO L168 Benchmark]: Toolchain (without parser) took 2241.54 ms. Allocated memory was 255.9 MB in the beginning and 329.3 MB in the end (delta: 73.4 MB). Free memory was 234.9 MB in the beginning and 222.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 84.8 MB. Max. memory is 16.0 GB. [2021-04-15 01:33:56,295 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 90.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:33:56,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.10 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 225.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:33:56,295 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.19 ms. Allocated memory was 255.9 MB in the beginning and 329.3 MB in the end (delta: 73.4 MB). Free memory was 225.8 MB in the beginning and 313.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:33:56,295 INFO L168 Benchmark]: Boogie Preprocessor took 18.64 ms. Allocated memory is still 329.3 MB. Free memory was 313.1 MB in the beginning and 312.2 MB in the end (delta: 840.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:33:56,295 INFO L168 Benchmark]: RCFGBuilder took 287.01 ms. Allocated memory is still 329.3 MB. Free memory was 311.7 MB in the beginning and 297.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-04-15 01:33:56,295 INFO L168 Benchmark]: TraceAbstraction took 1760.52 ms. Allocated memory is still 329.3 MB. Free memory was 296.7 MB in the beginning and 222.0 MB in the end (delta: 74.6 MB). Peak memory consumption was 76.2 MB. Max. memory is 16.0 GB. [2021-04-15 01:33:56,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory was 237.4 MB in the beginning and 237.3 MB in the end (delta: 90.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 122.10 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 225.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.19 ms. Allocated memory was 255.9 MB in the beginning and 329.3 MB in the end (delta: 73.4 MB). Free memory was 225.8 MB in the beginning and 313.1 MB in the end (delta: -87.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.64 ms. Allocated memory is still 329.3 MB. Free memory was 313.1 MB in the beginning and 312.2 MB in the end (delta: 840.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 287.01 ms. Allocated memory is still 329.3 MB. Free memory was 311.7 MB in the beginning and 297.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1760.52 ms. Allocated memory is still 329.3 MB. Free memory was 296.7 MB in the beginning and 222.0 MB in the end (delta: 74.6 MB). Peak memory consumption was 76.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 30]: assertion can be violated assertion can be violated We found a FailurePath: [L19] 0 pthread_t thread_id; [L21] 0 int x = 1; [L23] EXPR 0 \read(x) [L23] COND TRUE 0 x < 3 [L24] FCALL, FORK 0 pthread_create(&thread_id, NULL, foo, &x) VAL [i={5:0}] [L15] 1 int y = 4; VAL [i={5:0}, i={5:0}, y=4] [L25] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L26] 0 \read(thread_id) VAL [i={5:0}, i={5:0}, y=4] [L26] FCALL, JOIN 1 pthread_join(thread_id, NULL) VAL [i={5:0}, i={5:0}, y=4] [L27] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] 0 x++ VAL [i={5:0}, i={5:0}, y=4] [L23] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L23] COND TRUE 0 x < 3 VAL [i={5:0}, i={5:0}, y=4] [L24] FCALL, FORK 0 pthread_create(&thread_id, NULL, foo, &x) VAL [i={5:0}] [L15] 1 int y = 4; VAL [i={5:0}, i={5:0}, y=4] [L25] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L26] 0 \read(thread_id) VAL [i={5:0}, i={5:0}, y=4] [L26] FCALL, JOIN 1 pthread_join(thread_id, NULL) VAL [i={5:0}, i={5:0}, y=4] [L27] 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L28] 0 x++ VAL [i={5:0}, i={5:0}, y=4] [L23] EXPR 0 \read(x) VAL [i={5:0}, i={5:0}, y=4] [L23] COND FALSE 0 !(x < 3) VAL [i={5:0}, i={5:0}, y=4] [L30] 0 CodeAnnotStmt[Assertion] VAL [i={5:0}, i={5:0}, y=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1654.2ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 9.6ms, AutomataDifference: 322.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 94 SDtfs, 224 SDslu, 255 SDs, 0 SdLazy, 160 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 311.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.1ms SsaConstructionTime, 85.2ms SatisfiabilityAnalysisTime, 783.4ms InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 20 QuantifiedInterpolants, 781 SizeOfPredicates, 7 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...